package org.rjxh.examfront.config;

import org.rjxh.examfront.filter.TokenAuthenticatorFilter;
import org.rjxh.examfront.handler.AuthenticationEntryPointImpl;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
import org.springframework.security.config.http.SessionCreationPolicy;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.crypto.password.PasswordEncoder;
import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;

import javax.annotation.Resource;

@Configuration
public class SecurityConfig extends WebSecurityConfigurerAdapter {
    @Resource
    private TokenAuthenticatorFilter tokenAuthenticatorFilter;

    @Resource
    private AuthenticationEntryPointImpl authenticationEntryPoint;

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http
                //关闭csrf
                .csrf().disable()
                //不通过Session获取SecurityContext
                .sessionManagement().sessionCreationPolicy(SessionCreationPolicy.STATELESS).and().authorizeRequests()
                 //对于登录接口 允许匿名访问
                .antMatchers("/user/login").anonymous()
                 //除上面外的所有请求全部需要鉴权认证
                .anyRequest().authenticated();
                //.anyRequest().permitAll(); //测试接口使用

        //注册token识别拦截器
        http.addFilterBefore(tokenAuthenticatorFilter, UsernamePasswordAuthenticationFilter.class);
        http.cors();
        http.exceptionHandling().authenticationEntryPoint(authenticationEntryPoint);

    }

    @Bean
    public PasswordEncoder passwordEncoder(){
        return new BCryptPasswordEncoder();
    }

    /**
     * 暴露 认证管理器
     * @return
     * @throws Exception
     */
    @Bean(name = "AuthenticationManager")
    @Override
    public AuthenticationManager authenticationManagerBean() throws Exception {
        return super.authenticationManagerBean();
    }
}
